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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Grand Junction, CO (GJT), 00Z. Its levels are in the table below.
Observed Sounding at Grand Junction, CO (GJT), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (54)
Grand Junction, CO (GJT): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
867 mb1475 m17.01.0315° 3 kt
850 mb1645 m14.01.0310° 5 kt
833 mb1815 m12.6-1.4—
820 mb1947 m12.2-9.8—
802 mb2134 m10.8-7.5310° 9 kt
773 mb2438 m8.5-3.9320° 8 kt
752 mb2664 m6.8-1.2—
734 mb2863 m6.2-4.8—
718 mb3048 m5.9-18.4190° 4 kt
702 mb3227 m4.4-13.6—
700 mb3250 m4.4-13.6135° 7 kt
683 mb3450 m4.0-25.0—
670 mb3606 m4.4-25.6—
641 mb3962 m2.0-22.1155° 5 kt
617 mb4267 m-0.0-19.2125° 7 kt
607 mb4400 m-0.9-17.9—
594 mb4572 m-1.6-20.1080° 6 kt
572 mb4877 m-3.5-21.7025° 7 kt
550 mb5182 m-5.7-23.7005° 11 kt
529 mb5486 m-7.8-23.9025° 9 kt
508 mb5791 m-9.2-26.2020° 12 kt
500 mb5920 m-9.5-27.5025° 9 kt
489 mb6096 m-10.7-29.3025° 11 kt
470 mb6401 m-13.0-30.3000° 10 kt
451 mb6707 m-15.5-29.5000° 12 kt
431 mb7047 m-18.1-38.1—
416 mb7315 m-19.8-40.6030° 20 kt
400 mb7600 m-22.3-42.3035° 18 kt
383 mb7925 m-25.0-40.7040° 18 kt
367 mb8226 m-27.5-42.5—
351 mb8534 m-30.2-44.3045° 14 kt
337 mb8839 m-32.7-46.0030° 16 kt
322 mb9144 m-35.3-45.7035° 18 kt
309 mb9437 m-37.1-48.1—
300 mb9640 m-38.9-47.9030° 19 kt
284 mb10015 m-41.7-49.7—
270 mb10363 m-44.1-52.8030° 19 kt
258 mb10668 m-46.1-54.8030° 16 kt
250 mb10870 m-47.3-55.3045° 11 kt
239 mb11166 m-49.5-57.5—
224 mb11582 m-52.7-60.0080° 6 kt
214 mb11887 m-54.6-62.4110° 7 kt
203 mb12216 m-56.5-65.5—
200 mb12310 m-56.5-64.5030° 20 kt
187 mb12734 m-58.5-65.5—
176 mb13106 m-58.5-66.5050° 28 kt
164 mb13560 m-57.1-66.1—
152 mb14021 m-60.6-69.6110° 12 kt
150 mb14120 m-60.9-69.9105° 7 kt
140 mb14546 m-62.3-71.3—
128 mb15096 m-64.3-73.3—
117 mb15642 m-64.5-73.5—
106 mb16240 m-67.9-75.9290° 13 kt
100 mb16590 m-66.9-76.9290° 12 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.